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Llano River (Texas)

Llano River
Texas
Llano River Bluffs 2005.jpg
Sandstone bluffs along the Llano River, Mason County
Country  United States
State  Texas
Region Edwards Plateau
Source Confluence of North and South Llano
 - location Junction, Edwards Plateau
 - elevation 827 m (2,713 ft)
 - coordinates 30°29′33″N 099°45′22″W / 30.49250°N 99.75611°W / 30.49250; -99.75611
Mouth Colorado River
 - location Kingsland, Texas Hill Country
 - elevation 252 m (827 ft)
 - coordinates 30°39′19″N 98°25′46″W / 30.65528°N 98.42944°W / 30.65528; -98.42944Coordinates: 30°39′19″N 98°25′46″W / 30.65528°N 98.42944°W / 30.65528; -98.42944
Length 169 km (105 mi)
Llano Watershed.png
Map of the Llano River and associated watershed
Website: Handbook of Texas: Llano River

The Llano River (/ˈlæn/ LAN-oh) is a tributary of the Colorado River, approximately 105 miles (169 km) long, in central Texas in the United States. It drains part of the Edwards Plateau in Texas Hill Country northwest of Austin.

Two spring-fed tributaries, the North and South Llano, stretch across the otherwise arid lands of West Texas before merging just east of the small town of Junction, Texas in Kimble County, forming the head of the Llano River proper. The Llano River runs generally east-northeast through the rolling limestone terrain of the Edwards Plateau as it flows through Kimble County and across rural Mason County, passing to the south of the town of Mason, Texas. Continuing in an easterly direction, the river carves its way through the Llano Uplift, a roughly circular geologic dome of Precambrian rock, primarily granite, located in Central Texas. Flowing through Llano County, the river passes to the north of Enchanted Rock and flows through the town of Llano, Texas. Northeast of Llano, it turns sharply to the southeast, joining the Colorado from the northwest as an arm of Lake Lyndon B. Johnson, about 15 miles (24 km) southeast of Llano at Kingsland.


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